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Homework Assignment 6Download and complete Homework Assignment 6 [DOCX]. Suppose the number of equipment sales and service contracts that a store sold during the last six months for treadmills and exe

Homework Assignment 6

Download and complete Homework Assignment 6 [DOCX].

Suppose the number of equipment sales and service contracts that a store sold during the last six months for treadmills and exercise bikes was as follows:

Equipment Sales and Service Contracts Sold

THE TABLE IS ATTACHED

The store can only sell a service contract on a new piece of equipment. Of the 185 treadmills sold, 67 included a service contract and 118 did not.

Complete the following questions in the space provided below:

  1. Construct a 95 percent confidence interval for the difference between the proportions of service contracts sold on treadmills versus exercise bikes.
  2. Is there a major difference between the two pieces of equipment? Why or why not?
 
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